Drag and lift forces acting on a spherical bubble in homogeneous shear flow

被引：0

作者：

Sugioka, Ken-Ichi ^{[1
]}

Komori, Satoru ^{[1
]}

机构：

[1] Department of Mechanical Engineering, Advanced Institute of Fluid Science and Engineering, Kyoto University, Sakyo-ku, Kyoto-shi, Kyoto, 606-8501, Yoshidahonmachi

来源：

Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B | 2008年 / 74卷 / 02期

关键词：

Drag and lift forces; Flow outside and inside a bubble; Numerical simulation;

D O I：

10.1299/kikaib.74.273

中图分类号：

学科分类号：

摘要：

Drag and lift forces acting on a spherical bubble in a homogeneous linear shear flow were numerically investigated by means of a three dimensional direct numerical simulation based on a marker and cell (MAC) method. The effects of fluid shear rate and particle Reynolds number on drag and lift forces acting on a spherical bubble were compared with those on an inviscid bubble. The results show that the drag force acting on a spherical bubble in a linear shear flow increases with shear. The behavior of the lift force on a bubble is quite similar to that on an inviscid bubble, but the effects of fluid shear rate on the lift force acting on a spherical bubble in the linear shear flow become bigger than that acting on an inviscid bubble in the particle Reynolds number region of 1≤ Rep ≤300.

引用

页码：273 / 279

页数：6

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